SWEETWATER, FL - MAY 18: Former Florida Governor and potential Republican presidential candidate Jeb Bush speaks to supporters during a fundraising event at the Jorge Mas Canosa Youth Center on March 18, 2015 in Sweetwater, Florida. Mr. Bush is thought to be seeking to run for the Republican nomination but he has yet to formally announce his intentions. (Photo by Joe Raedle/Getty Images)
(2015 Getty Images)

Bush says he thinks Obama acted for "political purposes" and wanted to "create a wedge for Democrats to win elections."

For now, federal courts have held up Obama's plan to shield as many as 5 million immigrants in the U.S. from deportation.

Bush also tells CBS' "Face the Nation" that he favors gradually raising the retirement age for Social Security. He says "we need to look over the horizon" and mentions going from age 65 to 68 or 70. Bush says that would help sustain the retirement system for anybody' under 40.

Bush isn't yet in the 2016 Republican presidential race, but says he'll have to make up his mind after a coming trip to Europe.